Universal pop-up basin sink: Made of high quality copper with chrome finish, and the solid brass bouncing core has good resistance to rebound and rebound, resistant to detergents and oils, can seal the hole from the sink and drain the water quickly. High quality: The gasket is a high quality silicone ring, which is not easy to age and has a better seal. Push the sink stopper to prevent garbage from entering the pipe. Thoughtful design: adopting spring mechanism and screw pusher, just push the sink stopper to drain the water quickly. The slotted bolt set is detachable, so it is convenient to clean. Exquisite appearance: The sink cover adopts exquisite chrome appearance, which brings you a comfortable touch. The noble chrome cover plate shines with an extremely smooth surface in your washbasin sink! Hold Fitting:The spring-loaded drain plug is suitable for a sink with a 36-39mm. Please make sure the hole size before purchase. (If some parts are missing due to transportation, please contact us in time for a refund or replacement. Features: Diameter: 2.6" Thread Size: M8 Up Bolt Thread: M8 , M16 height: 3.7 cm Height closed: 2.8 cm Color: Silver + Golden Material: Zinc Alloy, Brass Package Included: 1 bolt +1 knob Notes: 1.Please allow 1-3mm differences due to the manual measurement, thank you for your understanding! 2.Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item.